Have you heard of Yammer yet? Think of it as Twitter for business - it's an online, information-sharing platform that enables employees across your organization to connect with each other.Its popularity seems to be growing - according to an IABC study, of four fifths of study respondents who said their organization is using social media for internal communications, around 20 percent were already using Yammer. Another 29 percent reported that they anticipate using it in the future. So if you haven't heard much about it yet, just wait!What exactly is all the yammering about? We've been doing a little research to find out how companies are using it and came across a couple of interesting examples:

• Qualcomm is using Yammer to help employees connect across divisions and geographic regions. They say this allows better collaboration because it enables employees to find new collaborators they may otherwise have never met.
• Bogler Laboratory at The University of Texas M. D. Anderson Cancer Center keep collaborative discussions going via Yammer to help them successfully carry out their research.
• Alcatel Lucent uses Yammer to host organized conversations (similar to Twitter hashtag conversations), and recently hosted a live Q&A featuring an outside expert who answered employees' questions.

Are you using Yammer? If so, how? What do you think of it? Leave us a note in the comments below.@lizkelly